I'm trying to do the same as this ASP.NET MVC Using two inputs with Html.BeginForm question describes but with enough difference that I don't really know hwo to apply it on my project:
I have a view that has 3 dropdownlists(profilelist, connected salarylist & not connected salarylist)
Looks like this:
<div class="row bgwhite">
#using (Html.BeginForm("GetConnectedSalaries", "KumaAdmin", FormMethod.Get, new { Id = "ProfileListForm" }))
{
<div class="four columns list list1">
#Html.DropDownList("Profiles", (SelectList) ViewBag.Profiles, "--Välj profilgrupp--",
new
{
//onchange = "$('#ProfileListForm')[0].submit();"
// Submits everytime a new element in the list is chosen
onchange = "document.getElementById('ProfileListForm').submit();"
})
</div>
}
#using (Html.BeginForm("Index", "KumaAdmin", FormMethod.Get, new { Id = "SalaryListForm" }))
{
<div class="four columns list list2" style="margin-top:-19px;">
#Html.DropDownList("Salaries", (SelectList) ViewBag.Salaries, "--Kopplade LöneGrupper--")
</div>
}
#using (Html.BeginForm("GetNOTConnectedSalaries", "KumaAdmin", FormMethod.Get, new { Id = "NotConSalaryListForm" }))
{
<div class="four columns list list2" style="margin-top:-19px;">
#Html.DropDownList("Salaries", (SelectList)ViewBag.NotConSalaries, "--Ej Kopplade LöneGrupper--")
<input style="float: left;" type="submit" value="Knyt" />
</div>
}
</div>
as you can see above when i change an element i the profile list i have script code that submits the form and calls the following actionresult that populates my "connected salarylist".
[HttpGet]
public ActionResult GetConnectedSalaries(int Profiles = -1)
{
Model.SalaryGroups = AdminManager.GetConnectedSalaries(Profiles);
ViewBag.Salaries = new SelectList(Model.SalaryGroups, "Id", "SalaryName", "Description");
return (Index());
}
What I wan't to do:
When I chose a element in the profilelist i would like to call 2 actionresults, the one that i have shown above AND a second one that will populare my third list that will contain "not connected salaries".
Second Actionresult:
public ActionResult GetNOTConnectedSalaries(int Profiles = -1)
{
Model.SalaryGroups = AdminManager.GetNOTConnectedSalaries(Profiles);
ViewBag.NotConSalaries = new SelectList(Model.NotConSalaryGroups, "Id", "SalaryName", "Description");
return (Index());
}
I don't want to do this with AJAX/JSON, strictly MVC.
I read the question that i linked above but did not know how to apply it to my project or if it is even possible to do the same.
If more info is needed ask and i will do my best to provide it.
Thank you!
I was so sure that the best way to do this was to have two actionresults that i was totaly blinded to the soloution that i could call both my db methods from the same actionresult and populate both of the lists.
Simple soloution:
[HttpGet]
public ActionResult GetSalaries(int Profiles = -1)
{
Model.SalaryGroups = AdminManager.GetConnectedSalaries(Profiles);
ViewBag.Salaries = new SelectList(Model.SalaryGroups, "Id", "SalaryName", "Description");
Model.NotConSalaryGroups = AdminManager.GetNOTConnectedSalaries(Profiles);
ViewBag.NotConSalaries = new SelectList(Model.NotConSalaryGroups, "Id", "SalaryName", "Description");
return (Index());
}
Sorry if I wasted your time:( but hopefully this will help others that attempt the same.
However if there is a way to do this in two actionresults then I will leave the question as open, would be interesting to see how it is done.
Related
I was hoping for some guidance on an issue I am having with preserving the value in a dropdownlist after post (razor)
I have a simple page:
#model testContingency.Models.ListByWardDD
#{
ViewBag.Title = "TestDropDowns";
}
<h2>TestDropDowns</h2>
<div>
#Html.DropDownList("HospModel", Model.Hospital, new { #onchange = "ChangeHospital(this.value)" })
#Html.DropDownList("WardModel", Model.Wards)
<script type="text/javascript">
function ChangeHospital(val) {
window.location.href = "/PatientListByWardDD/TestDropDowns?hospID=" + val;
}
</script>
</div>
here's the controller
public ActionResult TestDropDowns(int? hospID)
{
PASInpatientRepository pasRepo = new PASInpatientRepository();
var returnModel = new ListByWardDD();
var HospitalData = pasRepo.GetPatientHospitalsEnum();
returnModel.Hospital = pasRepo.GetHopspitalListItems(HospitalData);
var WardData = pasRepo .GetPatientWardsEnum(hospID);
returnModel.Wards = pasRepo.GetWardListItems(WardData);
ViewBag.HospSearch = hospID;
return View(returnModel);
}
In the controller PASInpatientRepository() communicates with a cache database. It passes back public IEnumerable < SelectListItem > GetHopspitalListItems. It calls stored procedures written within a cache database (same as sql stored procedures in essence). This is all working fine in its own crude way.
The issue I am having is that when I select the dropdownlist #Html.DropDownList("HospModel", Model.Hospital, new { #onchange = "ChangeHospital(this.value)" }) and the controller is called to refresh the Wards dropdown, I want to preserve the value I have selected in the hospital dropdown. I have tried a few different ways, but I admit, I'm a bit stuck. Most examples I found are for strongly typed.
As I mentioned, I'm new to MVC, but any advice on how to solve this issue, or suggestions on improving my code are greatly appreciated.
So I'm not sure what the Hospital property looks like but I'll make the assumption that each one has a unique ID.
Furthermore to bind the posted data to the view model you'll need to use forms in your view. To create the drop down list use the DropDownListFor-Helper. This way the data will be bound back to your Model after submitting the form.
So your view could look something like this
#model testContingency.Models.ListByWardDD
#{
ViewBag.Title = "TestDropDowns";
}
<h2>TestDropDowns</h2>
<div>
#using (Html.BeginForm("TestDropDowns", "YourController", FormMethod.Post))
{
#Html.DropDownListFor(x => x.HospitalID, Model.Hospital)
#Html.DropDownListFor(x => x.WardID, Model.Wards)
<input type="submit" value="send" />
}
</div>
Your ViewModel testContigency.Models.ListByWardDD must have at least the following properties
public class ListByWardDD {
public int HostpitalID { get;set; }
// the value of the SelectListItem-objects should be the hospital ID
public IEnumerable<SelectListItem> Hospital { get;set; }
public int WardID { get;set; }
// the value of the SelectListItem-objects should be the ward ID
public IEnumerable<SelectListItem> Wards { get;set; }
}
Once you post the form (for simplicity I added a button to send the form and left the javascript part out) the method TestDropDowns of your controller (which you need to fill in the BeginForm-Helper) will be called. That method expects expects an object of type ListByWardDD as a parameter and the framework will automatically populate the values for you.
[HttpPost]
public ActionResult TestDropDowns(ListByWardDD viewModel) {
// your code here, viewModel.HospitalID should contain the selected value
}
Note: After submitting the form the properties Hospital and Wards will be empty. If you need to display the form again, you need to repopulate those properties. Otherwise your dropdown lists are empty.
I tried my best to post valid code but I did not compile or test it.
I want to be able to display a form which changes depending on the value of a select on Dot.Net Core. I've seen many things like dynamic forms, View Components, razor and partials and also there is a lot of info out there but very confusing. Any info about the proper way to do what I want would be very appreciated.
I Have Categories>SubCategories>>Products
An order can be for one Category>>SubCategory only. So I want to display a select and depending on what category the user selects for the new Order, the products that I have to display. So I dont want to pick the user selection and go back to the controller and back to the view again and so on. I want to be able to dynamically display data according to the user selection.
Here an extract of the code just to briefly figure out what Im doing..I am not pasting the classes like Products,etc..
public class OrderCreateViewModel
{
public IEnumerable<Category> Categories { get; set; }
public IEnumerable<Branch> Branches { get; set; }
public int BranchId { get; set; }
public int CategoryId { get; set; }
}
Controller :
[HttpGet]
public IActionResult Create()
{
//Create vm
IEnumerable<Branch> branchList = _branchDataService.GetAll();
IEnumerable<Category> categoryList = _categoryDataService.GetAll();
OrderCreateViewModel vm = new OrderCreateViewModel
{
Categories = categoryList,
Branches = branchList
};
return View(vm);
}
View:
#model OrderCreateViewModel
<p>Create New Order </p>
<form asp-controller="Order" asp-action="Create" method="post">
<div class="form-group">
<label >Select Category</label>
<select class="form-control col-md-2" asp-for="CategoryId"
asp-items="#(new SelectList(Model.Categories ,"CategoryId","Name"))">
</select>
</div>
<div class="form-group">
<label>Select Branch</label>
<select class="form-control col-md-2" asp-for="BranchId"
asp-items="#(new SelectList(Model.Branches,"BranchId","Name"))">
</select>
</div>
<div >
<input type="submit" value="Save" />
</div>
</form>
Im just filling the select on the viewside and depending on what the user picks, the products I want to display. I am not passing the product list yet because I don't know where the "filter" for that particular Category takes place.
Hope you understand the idea of what i need :)
You've got two options here:
# 1 Use a Partial View And AJAX to get your data
Go have a look at the link below, it describes exactly what you want to achieve.
Populating Dropdown using partial view
# 2 Use Javascript to populate your second select:
First off you need to persist your data when the page loads
At the start of your view, add this:
#{
<text>
<script>
var data = "#Newtonsoft.Json.JsonConvert.SerializeObject(Model)";
</script>
</text>
}
Next use your on change event on the branch selector:
At the bottom of your view, do the following in the page ready event:
<script>
(function ()
{
var sltBranch = document.getElementsByName("BranchId")[0];
var sltCat = document.getElementsByName("CategoryId")[0]
sltCat.onchange = function () {
var dataAsObj = JSON.parse(data);
var branches = "";
for (i = 0; i < dataAsObj.Branches.length; i++)
{
if (dataAsObj.Branches[i].CategoryId == sltCat.value)
{
branches += "<option value='" + dataAsObj.Branches[i].BranchId + "'>" + dataAsObj.Branches[i].BranchName + "</option>"; //Whatever The branch name may be
}
}
sltBranch.innerHTML = branches;
}
}
)(document, window);
</script>
I would however advise you to follow option 1 as it is a lot more future proof strategy. This would mean that you need to change your view model etc, but if you plan on making extensive use of this strategy you need to make it more robust with something like option 1.
Good luck anyhow - happy coding.
I've been on this error for a while and the ienumerable object is blocking can someone pls help me the error is in the description.
HTML:
#model IEnumerable<DatabaseDAL.Models.WAGTripHdr>
<script type="text/javascript" src="~/Scripts/jquery-1.9.1.min.js"></script>
<script type="text/javascript">
$("select#BranchQuickChange").change(function () {
var branchName = $("select#BranchQuickChange option:selected").text();
alert(branchName);
window.location.href = '#Url.Action("QuickBranchChange", "TripSheets")?branchName=' + branchName;
});
</script>
<div class="row-fluid">
<div class="span4" style="margin-top: 15px">
#if (User.IsInRole("Administrator") || User.IsInRole("SuperUser"))
{
<strong>Quick Switch</strong> #Html.DropDownList("BranchQuickChange",ViewBag.CompanyList as SelectList)
}
</div>
Controller:
{
List<WAGBranch> listWagBranch = WAGBranchRepository.GetAllBranches(CompanyEnum.WAG).OrderBy(i => i.BRName).ToList();
List<string> listCompany = new List<string>();
foreach (WAGBranch branch in listWagBranch)
{
listCompany.Add(branch.BRName); // + " - " + branch.Branch);
}
//listCompany.Insert(0, "WAG HEAD OFFICE - WAG");
if ((string)selected == "") selected = null;
ViewBag.CompanyList = new SelectList(listCompany, selected);
}
Model:
[TableNameAttribute("WAGTripHdr")]
public class WAGTripHdr : SQLSelectUpdateInsertHelper
{
public string DebName { get; set; }
}
Waiting for some advices.
That error usually occurs when the collection passed to DropDownListFor is null. As a fallback, the helper tries to find the options in the ViewBag under a member named after the property, i.e. ViewBag.BranchQuickChange. When it fails to find anything usable there, as well, it gives up and you get the exception you reference.
That said, it appears you are in fact setting ViewBag.CompanyList in your action. Additionally, it is being set to a SelectList instance, so casting it back to SelectList in the view as you're doing should materialize the value. The only thing I can think of is that perhaps a different action than the one you've posted here is being loaded. In particular, if you have GET and POST versions of this action, make sure that both set ViewBag.CompanyList. It's possible you only added that line to one and not the other.
I am working with ASP.Net MVC 4 and entity framework. I have a table for inserting and updating reviews against restaurant by it's customer. While updating customer can't change their name. they can change only only change Rating and Comment. So, I have delete the input code for reviewerName(Customername) FROM MY VIEW PAGE OF THE mvc. But hacker can change the name or reviews_id by "Mass Assignment" / "Over posting". Means they can send ReviewerName by posting it in url as query string.
~/Reviews/Edit?ReviewerName=Hacker
To prevent it I have use Bind model binding with exclude parameter. Yes it prevent hacker to inject ReviewerName. But also deleting reviewer name from database table. Is there any way to solve this rather using "include".My controller code is below.
public ActionResult Edit([Bind(Exclude = "ReviewerName")] RestaurantReview review)
{
if (ModelState.IsValid)
{
_db.Entry(review).State = System.Data.EntityState.Modified;
_db.SaveChanges();
return RedirectToAction("Index", new { id = review.RestaurantId });
}
return View(review);
}
In Edit Page, make the field read only which you don't want to be changed by customer.
<div class="form-group">
#Html.LabelFor(model => model.Fname, new { #class = "control-label col-md-2" })
<div class="col-md-10">
#Html.TextBoxFor(model => model.Fname, new { #readonly = "readonly" })
#Html.ValidationMessageFor(model => model.Fname)
</div>
</div>
No need to exclude anything from Model in Controller .Hope this will help :)
I need to have multiple radio button groups in my form like this:
I know it's simply done by specifying the same "name" html attribute for each group.
HOWEVER
MVC doesn't let you specify your own name attribute when using html helper like this:
#Html.RadioButtonFor(i => item.id, item.SelectedID, new { Name = item.OptServiceCatId })
Because it looks at each tag's "name" attribute (not "id") to map/bind the form to the model which the controller receives, etc.
Some said that specifying each with the same "GroupName" attribute will solve the problem, but it didn't work either.
So, is there any way which works ?
EDIT:
Here's my view (simplified):
#model Service_Provider.ViewModels.SelectOptServicesForSubServiceViewModel
#foreach (var cat in Model.OptServices)
{
//A piece of code & html here
#foreach (var item in cat.OptItems.Where(i => i.MultiSelect == false))
{
#Html.RadioButtonFor(i => item.id, item.SelectedID, new { GroupName = item.OptServiceCatId })
<br />
}
}
NOTE:
My model is a List<OptServices>:
public List<OptServices> Cats {get; set;}
And OptServices has a List of OptItems inside:
public class OptServices
{
//a few things
public List<OptItems> Items {get; set;}
}
all you need is to tie the group to a different item in your model
#Html.RadioButtonFor(x => x.Field1, "Milk")
#Html.RadioButtonFor(x => x.Field1, "Butter")
#Html.RadioButtonFor(x => x.Field2, "Water")
#Html.RadioButtonFor(x => x.Field2, "Beer")
Ok here's how I fixed this
My model is a list of categories. Each category contains a list of its subcategories.
with this in mind, every time in the foreach loop, each RadioButton will have its category's ID (which is unique) as its name attribue.
And I also used Html.RadioButton instead of Html.RadioButtonFor.
Here's the final 'working' pseudo-code:
#foreach (var cat in Model.Categories)
{
//A piece of code & html here
#foreach (var item in cat.SubCategories)
{
#Html.RadioButton(item.CategoryID.ToString(), item.ID)
}
}
The result is:
<input name="127" type="radio" value="110">
Please note that I HAVE NOT put all these radio button groups inside a form. And I don't know if this solution will still work properly in a form.
Thanks to all of the people who helped me solve this ;)
I fixed a similar issue building a RadioButtonFor with pairs of text/value from a SelectList. I used a ViewBag to send the SelectList to the View, but you can use data from model too. My web application is a Blog and I have to build a RadioButton with some types of articles when he is writing a new post.
The code below was simplyfied.
List<SelectListItem> items = new List<SelectListItem>();
Dictionary<string, string> dictionary = new Dictionary<string, string>();
dictionary.Add("Texto", "1");
dictionary.Add("Foto", "2");
dictionary.Add("Vídeo", "3");
foreach (KeyValuePair<string, string> pair in objBLL.GetTiposPost())
{
items.Add(new SelectListItem() { Text = pair.Key, Value = pair.Value, Selected = false });
}
ViewBag.TiposPost = new SelectList(items, "Value", "Text");
In the View, I used a foreach to build a radiobutton.
<div class="form-group">
<div class="col-sm-10">
#foreach (var item in (SelectList)ViewBag.TiposPost)
{
#Html.RadioButtonFor(model => model.IDTipoPost, item.Value, false)
<label class="control-label">#item.Text</label>
}
</div>
</div>
Notice that I used RadioButtonFor in order to catch the option value selected by user, in the Controler, after submit the form. I also had to put the item.Text outside the RadioButtonFor in order to show the text options.
Hope it's useful!
I was able to use the name attribute that you described in your example for the loop I am working on and it worked, perhaps because I created unique ids? I'm still considering whether I should switch to an editor template instead as mentioned in the links in another answer.
#Html.RadioButtonFor(modelItem => item.Answers.AnswerYesNo, "true", new {Name = item.Description.QuestionId, id = string.Format("CBY{0}", item.Description.QuestionId), onclick = "setDescriptionVisibility(this)" }) Yes
#Html.RadioButtonFor(modelItem => item.Answers.AnswerYesNo, "false", new { Name = item.Description.QuestionId, id = string.Format("CBN{0}", item.Description.QuestionId), onclick = "setDescriptionVisibility(this)" } ) No
You can use Dictonary to map
Assume Milk,Butter,Chesse are group A (ListA)
Water,Beer,Wine are group B
Dictonary<string,List<string>>) dataMap;
dataMap.add("A",ListA);
dataMap.add("B",ListB);
At View , you can foreach Keys in dataMap and process your action